ART. 20 



THE APHID GENUS AMPHOROPHOEA MASON 



37 



Antennal tubercles small. Head 0.496 mm. across eyes. Head 

 and thorax dark and abdomen light, in balsam mount. No thoracic 

 or abdominal tubercles showing. Cornicles light at base, remainder 

 black. Measurements as follows: 



Cauda lighter in color than cornicles, 0.336 mm. long, slender, 4 

 sets of lateral hairs. 



Type.—(Q No. 20138). Deposited in U. S. National Museum. 

 Cat. No. 26374. 



AMPHOROPHORA MORRISONI (Swain) 



Figs. 92-97 



Nedaro siphon morrisoni Swain, Trans. Amer. Ent. Soc, vol. 44, no. 772, 

 1918, p. 8; Univ. Cal. Pub. Tech. Bull. Ent., vol. 3, no. 1, 1919, p. 78. 



Descriptions and measurements from 1 1 slides furnished by Harold 

 Morrison, after whom the species was named. 



Alate viviparous female. — This is a comparatively small species with 

 antennae about one and one-haK times as long as the body. Seg- 

 ments slender, not conspicuously imbricated; hairs few and small, 

 III with 7 to 11 small circular sensoria in a row on the outer edge. 

 Antennal tubercles of moderate size. Beak reaching beyond third 

 coxae. Cornicles long, conspicuously swollen, distinctly reticulated 

 at tip. The cauda is long, conical, not constricted, with 3-4 sets of 

 lateral hairs. Measurements as follows: 



